On this week's edition of the PCWorld Podcast, host Melissa J. Perenson is joined by Nick Mediati, Tim Moynihan, and Alex Wawro for a lively discussion about tablets and photography. We reveal the results of our first round of tablet display tests--Apple's iPad 2 came out on top of the field. And we delve into the innovative new Lytro light field digital camera technology, which has the potential to revolutionize how consumers approach digital photography.